We completed a SBS 2003 to SBS 2011 migration. After we demoted the original SBS 2003 server and removed it from the enterprise, some of the workstations started having problems logging in. When they tried to logon an error was returned saying "There are currently no logon servers to process the request." It seems like a DNS error but I can't figure out what the problem is.
We've checked the Primary DNS server settings using ipconfig /all on all the troubled workstations. The settings are correct. The DNS is set by the DHCP. The clients are all Win7 32-bit, except one which 64-bit.
We've tried ipconfig /flushdns, ipconfig /regusterdns, net stop netlogon, net start netlogon.
Your suggestions are greatly appreciated.